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Old Oct 25, 2012 | 10:01 PM
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Default fastest n/a 5.3

anyone know what the fastest n/a 5.3 is? in any chassis? what weight? stock bottom end? i'm starting a project that i'd like to see through...should go 11's with ease...maybe faster?

3400lb thirdgen camaro
5.3 with 232/240 .595"/.609" with stage 2.5 ls6 heads by PRC. 9.2:1 compression
longtubes with single 4" exhaust
vic jr intake with 750 cfm carb
monster stage 3 clutch
tick stage 2 t56
4.11,4.30,4.56?
28x11.5 ET Streets (bias) with tubes and screws on 10" wide wheels

any thoughts?
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Old Oct 25, 2012 | 10:14 PM
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i think you need to raise your static compression .
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Old Oct 25, 2012 | 10:23 PM
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yes, this is not a max effort though. simply a get it going with what i have laying around build. i have a 370" motor on the stand getting fixed, the 5.3 is the "spare" motor, lol.

i agree though, if i was to do a max effort 5.3, i'd be looking to get it up to around 11.5:1 or so. or even more and go to e85, but i'm not looking to change up the whole car, lol.

hmm...i do have a set of 4.8 flattops...maybe next go 'round...for now i'll keep what i have.

Last edited by thirdgenbum; Oct 25, 2012 at 11:10 PM.
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Old Oct 25, 2012 | 10:25 PM
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as far as i know the fastest guy with a 5.3 is a guy on here with a fox

he has a 5.3 with MS3 cam carb'd and a 150 shot and runs 9's
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Old Oct 25, 2012 | 11:11 PM
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Originally Posted by TyCZ28
as far as i know the fastest guy with a 5.3 is a guy on here with a fox

he has a 5.3 with MS3 cam carb'd and a 150 shot and runs 9's
any idea what he weighs? street car or stripped out grudge type car?

so he runs 10's n/a i'd imagine?
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Old Oct 25, 2012 | 11:51 PM
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heres he car... not sure on the weight.. gimmie a bit and ill track down his build thread on here and my bad hes running 10's flat... i thought he had broken 9's

https://ls1tech.com/forums/conversio...h400-swap.html
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Old Oct 26, 2012 | 10:11 AM
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that car runs good!
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Old Oct 26, 2012 | 10:16 AM
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Even compression in the 10s will be better than that lowly 9.2.

Why not some PRC 5.3s with a .40 gasket for more compression?
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Old Oct 26, 2012 | 10:19 AM
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Cause I already have the ls6 heads...I'm excited about some 87 octane though, lol
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Old Oct 27, 2012 | 11:33 AM
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The car is not real light. The tire is not all that short. I'd bet it'll want the
4.56 gears and even with the low static compression I'd guess 11.40s in
decent air.
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Old Oct 27, 2012 | 12:52 PM
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Yeah, I'm not expecting a rocket ship here, just a quick street car using already owned pieces. 11.40is faster than i was thinking.
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Old Dec 7, 2012 | 04:18 PM
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98supersport is the car in the video.

My car is pretty similar to his.

94 Mustang 3114lbs with driver
5.3L with stock 862 heads
MS3 cam and comp valve springs
Dynatech 1 7/8 headers w/3" exhaust
LS6 intake
E85
TH350 w/FTI converter
275/60/15 MT DRs
3.73s

11.40 @ 117.88 w/1.58 60 on motor
10.58 @ 126.33 w/1.52 60 on 100 shot
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Old Feb 2, 2013 | 08:15 AM
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well, i got it together guys and have been street driving it some for the last couple of months. it feels decently strong so far. here's a couple pics and a video (go to minute 3 if you want to skip the neighborhood driving)






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Old Feb 2, 2013 | 03:04 PM
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nice setup... seems to run pretty healthy. What mufflers are you running if you dont mind me asking?
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Old Feb 2, 2013 | 03:22 PM
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Single 4" dynomax ultraflow in the stock location
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Old Feb 2, 2013 | 07:32 PM
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looks like a fun ride.get a turbo .
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Old Feb 2, 2013 | 09:23 PM
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meh...did this instead...

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Old Feb 2, 2013 | 09:46 PM
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with that compression on that motor id run a nice turbo and go real fast.
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Old Feb 2, 2013 | 09:58 PM
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the car normally has an 11.5:1 370 in it...i am not looking to change the entire car, just wondering what this junkyard motor will do while i'm freshening the 370.
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Old Mar 11, 2013 | 07:00 AM
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well, i took it out to the track this past saturday. nothing spectacular to report as i was on a hardtire, and had 200lbs of ballast in the back trying to make it work. i also had never been down the track with a six speed before. fighting traction between the hardtire and the harsh level 3 monster, i was able to get a best of 12.70@113mph, 2.05 60', 3700#s and 730' DA. so far i'm pretty happy with it. i can't wait to get the slicks back on the car and leave off the 2step, as well as get this 200# of concrete out of the trunk, lol!

for the record, i still haven't done much carb tuning, and as of today, i now only have 7 passes under my belt with a stick, and only 2 were clean, lol. i have plenty of work ahead of me, but wanted to share my findings, and not just let this thread die as so many do. i anticipate 11 second capable timeslips before the end of the season.

i'm still months away from being able to spray the car too....i need to redo the wiring in the car, and i want to integrate the system into the car when i do so.

Last edited by thirdgenbum; Mar 11, 2013 at 07:05 AM.
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